CN113324989B - Reflective concave conical mirror panoramic camera device suitable for rock mass structure is surveyd to deep hole - Google Patents
Reflective concave conical mirror panoramic camera device suitable for rock mass structure is surveyd to deep hole Download PDFInfo
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- CN113324989B CN113324989B CN202110554691.XA CN202110554691A CN113324989B CN 113324989 B CN113324989 B CN 113324989B CN 202110554691 A CN202110554691 A CN 202110554691A CN 113324989 B CN113324989 B CN 113324989B
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- concave conical
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
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- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B7/00—Mountings, adjusting means, or light-tight connections, for optical elements
- G02B7/18—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors
- G02B7/182—Mountings, adjusting means, or light-tight connections, for optical elements for prisms; for mirrors for mirrors
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B17/00—Details of cameras or camera bodies; Accessories therefor
- G03B17/02—Bodies
- G03B17/17—Bodies with reflectors arranged in beam forming the photographic image, e.g. for reducing dimensions of camera
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B37/00—Panoramic or wide-screen photography; Photographing extended surfaces, e.g. for surveying; Photographing internal surfaces, e.g. of pipe
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/51—Housings
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
Abstract
The invention relates to a reflective concave conical mirror panoramic camera device suitable for observing a rock mass structure in a deep hole, wherein a metal shell is provided with a glass window connecting piece for fixedly connecting a glass window, the glass window connecting piece and the metal shell have the same central axis direction and are circular in section in the direction vertical to the central axis, each light source through hole which is circumferentially distributed is arranged in the glass window connecting piece, and an inner cutting groove is communicated with the hollow part of the metal shell through an inner cutting groove arranged on the inner wall of the glass window connecting piece; the data acquisition circuit comprises light sources and cameras, and each light source penetrates through the inner cutting groove and then is embedded into each light source through hole; the camera collects the hole wall image obtained by reflection of the reflective concave conical mirror. The design form and the design strength of the glass window of the panoramic camera device can meet the application depth range of optical imaging equipment.
Description
Technical Field
The invention relates to the field of optical imaging and integrated circuits, in particular to a reflective concave conical mirror panoramic camera device suitable for observing a rock mass structure by a deep hole.
Background
The existence of structural plane is the source of discontinuity, anisotropy and nonuniformity of rock engineering properties, and the structural plane constitutes the isolation plane and sliding plane in the rock and controls the scale and type of unstable destruction of the rock.
Geological drilling is the most conventional means of going deep into the interior of a rock body, hole wall imaging technologies such as drilling optical imaging, ultrasonic imaging and resistivity imaging are combined, 360-degree observation can be carried out on the wall surface of a drilling hole, the intersection trace of a structural surface and the drilling hole is identified through underground in-situ measurement, the corresponding relation among the opening degree, filling and appearance characteristics of the upper wall surface and the lower wall surface of the structural surface is obtained, a large amount of data of the internal structural surface of the rock body can be obtained, the data of the structural surface are all in-situ measurement results, the property characteristics of the structural surface are reserved to the maximum degree, and the authenticity of the data is guaranteed from the data source. The common hole wall imaging technologies such as drilling optical imaging, ultrasonic imaging and resistivity imaging are adopted, wherein the surveying equipment based on the drilling optical imaging technology has the advantages of high measuring precision, simplicity and convenience in operation, mature development of optical accessories and the like. The shell of general drilling optical imaging equipment is composed of a glass window and a metal shell, and internal imaging components are protected by technical means such as sealing and water proofing, but the sensor has some defects which are difficult to solve in some special occasions or specific research objects, such as:
(1) weak voltage resistance of optical window
The panoramic photography realized based on the drilling optical imaging technology necessarily needs to design a glass window capable of transmitting light rays by 360 degrees, a light source is transmitted out of the glass window and irradiates on the wall of a drilling hole, and then the light source enters a camera part through the glass window to realize panoramic imaging in the drilling hole. Commonly used glass windows are typically in the form of a hollow cylinder or a flat disc, but both glass window approaches have some problems: the general wall thickness of hollow cylindric glass window is thinner, and between glass window and the metal casing, through the sealing connection of glue or O type circle formation, water pressure resistant ability is relatively poor, is not suitable for the in-hole development test work. The plane disc-shaped glass window can be designed to be thicker in wall thickness and basically meets the water pressure resistance, but the optical path of the glass window is not specially designed in refraction or reflection, so that the basic requirement of observation perpendicular to the hole wall of the drilled hole is not met on the optical path, and the non-orthographic observation does not meet the basic measurement principle, so that the plane disc-shaped glass window meets the water pressure resistance requirement but does not meet the measurement requirement.
(2) Compatibility problem between different materials under high-temperature special environment
According to the earth temperature gradient and the water pressure, a testing environment with high earth temperature and high osmotic pressure may exist at the deep part of a rock body, and the optical imaging equipment is formed by assembling a metal shell and optical glass together, so that the optical imaging equipment has higher requirements on the testing environment, and particularly, harmony of expansion and contraction and thermal expansion of two different materials is difficult to ensure under high water temperature and high water pressure.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides a reflective concave conical mirror panoramic camera device suitable for observing a rock mass structure in a deep hole by taking the test environment of high water temperature and high water pressure in the deep hole into consideration.
The technical scheme for solving the technical problems is as follows: the utility model provides a reflective concave conical mirror panorama camera device suitable for rock mass structure is surveyd to deep hole, includes: the device comprises a reflective concave conical mirror 1, a metal shell 2 and a data acquisition circuit 4; the metal shell 2 is in a hollow cylindrical shape, the reflective concave conical mirror 1 is connected to one opening end of the metal shell 2, and the data acquisition circuit 4 is arranged inside the metal shell 2;
the metal shell 2 is provided with a glass window connecting piece 2-1 for fixedly connecting a glass window, the glass window connecting piece 2-1 and the metal shell 2 have the same central axis direction and the section perpendicular to the central axis direction is in a circular ring shape, each light source through hole 2-1-1 distributed in the circumferential direction is arranged in the glass window connecting piece 2-1, and the light source through holes 2-1-1 are communicated with the hollow part of the metal shell 2 through an inner cutting groove 2-1-2 arranged on the inner wall of the glass window connecting piece 2-1;
the data acquisition circuit 4 comprises a light source 4-1 and a camera 4-2, and each light source 4-1 penetrates through the inner cutting groove 2-1-2 and then is embedded into each light source through hole 2-1-1; the camera 4-2 collects the hole wall image obtained by reflection of the reflective concave conical mirror 1.
The invention has the beneficial effects that: the invention provides a reflective concave conical mirror panoramic camera device suitable for observing a rock mass structure by a deep hole, which considers that the water pressure at the bottom of a drilling hole is higher in the rock mass structure detection of the deep hole, realizes the improvement of the design strength of a glass window by changing an optical path, and meets the application depth range of optical imaging equipment.
On the basis of the technical scheme, the invention can be further improved as follows.
Further, the reflective concave conical mirror 1 is a cylindrical structure with two concave ends, and one end of the inner side is in contact with each light source through hole 2-1-1;
the concave part at one end of the outer side of the reflective concave conical mirror 1 is of a structure with a center being an arc surface 1-2 and the periphery being a coating surface 1-1, so that light emitted by the light source 4-1 is reflected by the coating surface 1-1 to illuminate the wall of a drill hole, and after rock on the wall of the drill hole in the illumination hole section is subjected to diffuse reflection, part of light enters the coating surface 1-1 and is reflected by the mirror surface to vertically penetrate through the transmission surface 1-3 and then enters the camera 4-2;
the concave part at one end of the inner side of the reflective concave conical mirror 1 is a transmission surface 1-3, and the camera 4-2 is positioned at the spherical center of the transmission surface 1-3.
Further, the reflective concave conical mirror 1 is made of quartz glass with light transmittance meeting certain requirements; the film coating surface 1-1 is a silver film layer.
Further, the metal case 2 further includes: the device comprises a circuit bin 2-2, a tail end cover 2-3, a fixed ring 2-4, a rotary hanging ring 2-5 and a partition plate 2-6; the circuit bin 2-2 is a hollow structure with two open ends, and the partition plate 2-6 is arranged inside the hollow structure of the circuit bin 2-2;
one end of the glass window connecting piece 2-1 is close to the reflective concave conical mirror 1, and the other end of the glass window connecting piece is connected with an opening at one end of the circuit bin 2-2; the tail end cover 2-3 covers the opening at the other end of the circuit bin 2-2; the fixing ring 2-4 is fixed on the end face of the outer side of the tail end cover 2-3, and the rotary hanging ring 2-5 is rotatably fixed on the fixing ring 2-4.
Furthermore, a first sealing groove 2-2-1 and a second sealing groove 2-2-2 are arranged at two ends of the circuit bin 2-2;
o-shaped sealing rings are arranged in the first sealing groove 2-2-1 and the second sealing groove 2-2-2, so that the glass window connecting piece 2-1 and the tail end cover 2-3 are respectively in sealing connection with the circuit bin 2-2.
Furthermore, the glass window connecting piece 2-1 in the metal shell 2 is made of an iron-nickel alloy material, and other components are made of a stainless steel material.
Further, the data acquisition circuit 4 further includes: the device comprises a voltage transformation module 4-3, an integrated wiring harness 4-4, a storage battery 4-5 and a data acquisition module 4-6; the light source 4-1, the camera 4-2, the voltage transformation module 4-3, the storage battery 4-5 and the data acquisition module 4-6 are mutually connected through the integrated wiring harness 4-4 to carry out power supply and signal transmission;
the storage battery 4-5 comprises a charging wire connected with external equipment, the generated voltage is transformed by the transformation module 4-3 and then provides each power supply voltage to the light source 4-1, the camera 4-2 and the data acquisition module 4-6, the transformation module 4-3 is connected with a control wire connected with the external equipment and receives a control signal sent by the external equipment and used for controlling the starting or the closing of the data acquisition circuit 4;
the camera 4-2 transmits the acquired hole wall image to the data acquisition module 4-6 in a video signal mode, and the data acquisition module 4-6 processes and stores the video signal and provides a serial port line for outputting to external equipment.
Further, the panoramic camera device also comprises a fixed frame 3, wherein the fixed frame 3 is arranged inside the metal shell 2; the fixing frame 3 includes: the light shield 3-1 and the support frame 3-2 are both hollow structures, one ends of the light shield 3-1 and the support frame 3-2 are connected with each other, and the axial direction of the middle ends of the light shield and the support frame is the same as the axial direction of the metal shell 2;
the camera 4-2, the voltage transformation module 4-3, the storage battery 4-5 and the data acquisition module 4-6 are arranged in the hollow structure of the support frame 3-2;
the position and the size of the light shield 3-1 correspond to those of the glass window connecting piece 2-1, the hollow structure is a conical structure with an upper end opening connected with a cylinder, the conical structure with the upper end opening is arranged at one side close to the reflective concave conical mirror 1 and communicated with the inside of the hollow structure of the support frame 3-2 through a cylinder.
Further, the cone angle of the cone with the upper end opening is the angle of view of the camera 4-2; the fixing frame 3 is made of an aluminum alloy material.
Further, the panoramic camera device further comprises a buffer protection component 5; the buffering protection part 5 is an elastic structure body with a convex end connected with the reflective concave conical mirror 1, and the concave size of the convex end is matched with that of one end of the inner side of the reflective concave conical mirror 1.
The beneficial effect of adopting the further scheme is that: the reflective concave conical mirror comprises a coating surface, an arc surface and a transmission surface, the light source emits scattered light which irradiates the coating surface, is reflected by the mirror surface and irradiates the hole wall through the reflective concave conical mirror; after being subjected to diffuse reflection, the rock on the hole wall enters the reflective concave conical mirror, is subjected to mirror reflection of the coating surface, vertically penetrates through the transmission surface and enters the camera, and the design strength of the glass window is improved by changing the optical path; the chamfer arc surface reduces stress concentration and prevents the overall structure from being damaged by water pressure.
Drawings
FIG. 1 is a cross-sectional view of an embodiment of a reflective concave conical mirror panoramic camera device suitable for a deep hole observation rock mass structure provided by the invention;
FIG. 2 is a cross-sectional view of an embodiment of a reflective concave conical mirror according to the present invention;
FIG. 3 is a cross-sectional view taken along line A-A of FIG. 2;
FIG. 4 is a cross-sectional view of an embodiment of a metal shell provided by the present invention;
FIG. 5 is a cross-sectional view taken along line C-C of FIG. 4;
FIG. 6 is a cross-sectional view of an embodiment of a fixed frame of a data acquisition circuit provided by the present invention;
FIG. 7 is a cross-sectional view taken along line D-D of FIG. 6;
FIG. 8 is a block diagram of a schematic structure of an embodiment of a data acquisition circuit provided by the present invention;
FIG. 9 is an optical path diagram of one embodiment of an illumination light path provided by the present invention;
FIG. 10 is an optical path diagram of an embodiment of an image capture optical path provided by the present invention;
fig. 11 is a sectional view of an embodiment of a cushioning protection member provided in the present invention.
In the drawings, the components represented by the respective reference numerals are listed below:
1. a reflective concave conical mirror 1-1, a film coating surface 1-2, an arc surface 1-3, a transmission surface 2, a metal shell 2-1, a glass window connecting piece 2-1-1, a light source through hole 2-1-2, an inner tangent groove 2-2, a circuit cabin 2-2-1, a first sealing groove 2-2, a second sealing groove 2-3, a tail end cover 2-4, a fixing ring 2-5, a rotary hanging ring 2-6, a partition plate 3, a fixing frame 3-1, a shading cover 3-2, a support frame 4, a data acquisition circuit 4-1, a light source 4-2, a camera 4-3, a voltage transformation module 4-4, an integrated wiring harness 4-5, 4-6 parts of a data acquisition module, 5 parts of a buffer protection component, 5-1 parts of hole wall rocks in the lighting hole section, 5-2 parts of the lighting hole section.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1, a cross-sectional view of an embodiment of a reflective concave conical mirror panoramic imaging device suitable for deep-hole observation of a rock mass structure according to the present invention is shown in fig. 1, and the panoramic imaging device includes: the device comprises a reflective concave conical mirror 1, a metal shell 2 and a data acquisition circuit 4; the metal shell 2 is in a hollow cylindrical shape, the reflective concave conical mirror 1 is connected to one opening end of the metal shell 2, and the data acquisition circuit 4 is arranged inside the metal shell 2.
The metal shell 2 is provided with a glass window connecting piece 2-1 for fixedly connecting a glass window, the glass window connecting piece 2-1 and the metal shell 2 are in the same direction of the central axis and have circular sections in the direction perpendicular to the central axis, the glass window connecting piece 2-1 is internally provided with various light source through holes 2-1-1 which are distributed circumferentially, and the light source through holes 2-1-1 are communicated with the hollow part of the metal shell 2 through internal cutting grooves 2-1-2 arranged on the inner wall of the glass window connecting piece 2-1.
The data acquisition circuit 4 comprises a light source 4-1 and a camera 4-2, and each light source 4-1 penetrates through the inner cutting groove 2-1-2 and then is embedded into each light source through hole 2-1-1; the camera 4-2 collects the hole wall image obtained by reflection of the reflective concave conical mirror 1.
The light source 4-1 can be composed of a plurality of led bulbs, and the distribution form and the number of the led bulbs are consistent with the positions and the number of the light source through holes of the 2-1-1 circumferentially distributed on the glass window connecting piece 2-1.
The invention provides a reflective concave conical mirror panoramic camera device suitable for observing a rock mass structure by a deep hole, which considers that the water pressure at the bottom of a drilling hole is higher in the rock mass structure detection of the deep hole, realizes the improvement of the design strength of a glass window by changing an optical path, and meets the application depth range of optical imaging equipment.
Example 1
The embodiment 1 provided by the invention is an embodiment of a reflective concave conical mirror panoramic camera device suitable for observing a rock mass structure in a deep hole, and as can be seen from fig. 1, the panoramic camera device comprises the following 5 static mechanical structures: the reflective concave conical mirror panoramic camera device is formed by assembling 5 static mechanical structures through a reflective concave conical mirror 1, a metal shell 2, a fixing frame 3, a data acquisition circuit 4 and a buffer protection component 5.
The metal shell 2 is a hollow cylinder, the reflective concave conical mirror 1 is connected to one open end of the metal shell 2, and in the embodiment shown in fig. 1, the right end of the reflective concave conical mirror 1 is connected to the left end of the glass window connecting piece 2-1 of the metal shell 2, and can be bonded by glue. The data acquisition circuit 4 is arranged inside the metal shell 2.
Preferably, as shown in fig. 2, a cross-sectional view of an embodiment of a reflective concave conical mirror provided by the present invention is shown, fig. 3 is a cross-sectional view taken along a direction a-a in fig. 2, and as can be seen from fig. 1 to 3, a reflective concave conical mirror 1 has a cylindrical structure with two concave ends, and one end of the inner side of the reflective concave conical mirror is in contact with each light source through hole 2-1-1; the inner side and the outer side are the inner side and the outer side of the panoramic camera device.
The concave part at one end of the outer side of the reflective concave conical mirror 1 is of a structure with a circular arc surface 1-2 at the center and a coating surface 1-1 at the periphery, so that light emitted by a light source 4-1 is reflected by the coating surface 1-1 to illuminate the wall of a drill hole, and after rocks on the wall of the drill hole in an illumination hole section are subjected to diffuse reflection, part of light enters the coating surface 1-1 and is reflected by a mirror surface to vertically penetrate through a transmission surface 1-3 and then enters a camera 4-2; by designing the section of the chamfer arc surface 1-2, stress concentration is reduced, and the integral structure is prevented from being damaged by water pressure.
The concave part at one end of the inner side of the reflective concave conical mirror 1 is a transmission surface 1-3, and the camera 4-2 is positioned at the spherical center of the transmission surface 1-3.
The transmission surface 1-3 is a spherical arc surface, and the key design parameters comprise two points: the spherical radius R of the transmission surface 1-3 is designed by considering the position of the camera 4-2, so that the camera 4-2 is positioned at the spherical center of the transmission surface 1-3 and is designed for the reflected light energy on the front surface of the film coating surface 1-1 to vertically pass through the transmission surface 1-3; secondly, the key design parameter of the transmission surface 1-3 is the transmission range PhiL, and the field angle and the relative position of the camera 4-2 determine the transmission range PhiL.
Specifically, as shown in fig. 9, an optical path diagram of an embodiment of an illumination light path provided by the present invention is shown in fig. 10, and when 5 static mechanical structures are connected and fixed with each other, the relative position relationship between the camera 4-2 and the reflective concave conical mirror 1 is a fixed value, as shown in fig. 9 and fig. 10. As shown in fig. 9, when the optical path thereof can be designed as: firstly, light sources 4-1 which are symmetrically distributed along a central axis emit scattered light which irradiates a film coating surface 1-1, the scattered light is reflected by a mirror surface and irradiates a hole wall through a reflective concave conical mirror 1, and an illuminated hole wall section is an illumination hole section 5-2; and secondly, after diffuse reflection, part of light enters the reflective concave conical mirror 1 through the hole wall rock 5-1 in the lighting hole section 5-2, is reflected by the mirror surface of the coating surface 1-1, vertically passes through the transmission surface 1-3, enters the camera 4-2, and is converted into image electric signals to be transmitted and stored.
When the relative position relationship, the optical path and the drilling diameter of the camera 4-2 and the reflective concave conical mirror 1 are known, the position relationship of each point on the hole wall can be calculated according to the geometric relationship by the original plane image of the camera 4-2, so that the mapping conversion from the original plane image of the camera 4-2 to the hole wall image can be realized.
Specifically, the reflective concave conical mirror 1 is made of quartz glass with a light transmittance meeting certain requirements; the film coating surface 1-1 is a silver film layer.
In the specific implementation, a bright silver film layer with light reflection capability is formed on the film coating surface 1-1 by utilizing the chemical reaction of reducing the silver compound into silver, and the cured glue solution is used for sealing and protecting the silver film layer.
The key design parameters of the coating surface 1-1 comprise two points: the angle value of an included angle B between a film coating surface 1-1 and the end surface of a cylinder is designed by considering the reflection angle of light and the position of a camera 4-2, and is a technical parameter for enabling reflected light vertical to the hole wall of a drilled hole to enter the camera 4-2 through refraction, and when the relative position of the camera 4-2 and a reflective concave conical mirror 1 is fixed to be a fixed value, the included angle B between the film coating surface 1-1 and the cross section is a fixed value; the range size of the film coating surface 1-1 is phi D1-phi D2, is designed by considering the irradiation range of the light source 4-1 and the position of the camera 4-2, and is used for illuminating the hole wall of the drill hole by reflected light.
The key design parameters of the reflective concave conical mirror comprise two, namely a length H and an outer diameter phi D3, the length H determines the design thickness of the part so as to directly influence the capability of the part for resisting water pressure, the outer diameter phi D3 determines the inner diameter of a drill hole suitable for the part, and when the outer diameter phi D3 is smaller than the inner diameter of the drill hole, the part can enter the drill hole for observation.
The metal shell 2 is provided with a glass window connecting piece 2-1 for fixedly connecting a glass window, the glass window connecting piece 2-1 and the metal shell 2 are in the same central axis direction, the section of the glass window connecting piece in the direction perpendicular to the central axis is in a circular ring shape, each light source through hole 2-1-1 distributed in the circumferential direction is arranged in the glass window connecting piece 2-1, and the light source through holes 2-1-1 are communicated with the hollow part of the metal shell 2 through inner cutting grooves 2-1-2 arranged on the inner wall of the glass window connecting piece 2-1.
Preferably, as shown in fig. 4, a cross-sectional view of an embodiment of a metal shell according to the present invention is provided, and fig. 5 is a cross-sectional view taken along a direction C-C in fig. 4, and as can be seen from fig. 1 to 5, the metal shell 2 further includes: the device comprises a circuit bin 2-2, a tail end cover 2-3, a fixed ring 2-4, a rotary hanging ring 2-5 and a partition plate 2-6; the circuit bin 2-2 is a hollow structure with two open ends, and the partition plate 2-6 is arranged inside the hollow structure of the circuit bin 2-2.
One end of the glass window connecting piece 2-1 is close to the reflective concave conical mirror 1, and the other end is connected with an opening at one end of the circuit bin 2-2; the tail end cover 2-3 covers the opening at the other end of the circuit bin 2-2; the fixed ring 2-4 is fixed on the end face of the outer side of the tail end cover 2-3, and the rotary hanging ring 2-5 is rotatably fixed on the fixed ring 2-4. And in the process of testing in a drilled hole, the rotary suspension ring 2-5 is connected with the steel wire rope.
In the specific implementation, taking the embodiment shown in fig. 4 as an example, the right inner screw thread of the glass window connecting piece 2-1 is connected with the left outer screw thread of the circuit bin 2-2 through screw threads, and the screw threads between the two are coated with the liquid raw material tape. The right end inner screw thread of the circuit bin 2-2 is connected with the left end outer screw thread of the tail end cover 2-3 through screw threads, a liquid raw material belt is coated on the screw threads between the right end inner screw thread and the tail end outer screw thread, and an O-shaped sealing ring is arranged in a 2-2-2 sealing groove, so that the 2-2 circuit bin and the 2-3 tail end cover form a sealing connection relation. The right end of the tail end cover 2-3 is connected with the left end of the fixing ring 2-4 through welding. The rotary hanging ring 2-5 penetrates through the left end of the fixed ring 2-4, the step end face of the rotary hanging ring 2-5 is larger than the through hole at the right end of the fixed ring 2-4, so that the rotary hanging ring 2-5 cannot be separated from the fixed ring 2-4, and the rotary hanging ring 2-5 can rotate around the axis in the fixed ring 2-4. The interior of the circuit bin 2-2 is connected with the external screw thread of the partition board 2-6 through the internal screw thread and the screw thread.
Furthermore, a first sealing groove 2-2-1 and a second sealing groove 2-2-2 are arranged at two ends of the circuit bin 2-2.
O-shaped sealing rings are arranged in the first sealing groove 2-2-1 and the second sealing groove 2-2-2, so that the glass window connecting piece 2-1 and the tail end cover 2-3 are respectively in sealing connection with the circuit bin 2-2.
The glass window connecting piece 2-1 in the metal shell 2 is made of iron-nickel alloy materials, and other parts are made of stainless steel materials.
In the embodiment of the invention, the influence of the temperature of water in the drilled hole on the glass window and the metal shell is considered, and the metal shell 2 is made of two metal materials: 316 stainless steel and low expansibility iron-nickel alloy material, wherein the key technology lies in selecting the iron-nickel alloy material consistent with quartz glass thermal expansion coefficient for the reflective concave conical mirror 1 of quartz glass material and the metal casing 2 of iron-nickel alloy material can coordinate the deformation, and other parts select 316 stainless steel for use, make metal casing 2 satisfy certain water pressure resistant intensity.
The data acquisition circuit 4 comprises a light source 4-1 and a camera 4-2, and each light source 4-1 penetrates through the inner cutting groove 2-1-2 and then is embedded into each light source through hole 2-1-1; the camera 4-2 collects the hole wall image obtained by reflection of the reflective concave conical mirror 1.
Preferably, as shown in fig. 8, a schematic structural block diagram of an embodiment of the data acquisition circuit provided in the present invention is shown, and in combination with fig. 8, the data acquisition circuit 4 further includes: the device comprises a voltage transformation module 4-3, an integrated wiring harness 4-4, a storage battery 4-5 and a data acquisition module 4-6; the light source 4-1, the camera 4-2, the voltage transformation module 4-3, the storage battery 4-5 and the data acquisition module 4-6 are connected with each other through the integrated wiring harness 4-4 to perform power supply and signal transmission.
The storage battery 4-5 comprises a charging wire connected with external equipment, the generated voltage is transformed by the transformation module 4-3 to provide each power supply voltage for the light source 4-1, the camera 4-2 and the data acquisition module 4-6, and the transformation module 4-3 is connected with a control wire connected with the external equipment to receive a control signal sent by the external equipment to control the starting or the closing of the data acquisition circuit 4.
The camera 4-2 transmits the acquired hole wall image to the data acquisition module 4-6 in a video signal mode, and the data acquisition module 4-6 processes and stores the video signal and provides a serial port line for outputting to external equipment.
In the process of a power supply working state: the storage battery 4-5 is divided into power supply lines to enter the integrated wiring harness 4-4, power is supplied to the voltage transformation module 4-3 through the integrated wiring harness 4-4, the voltage transformation module 4-3 is adjusted through voltage, and different voltages are distributed to the light source 4-1, the camera 4-2 and the data acquisition module 4-6 through the integrated wiring harness 4-4.
In the data transfer state process: the camera 4-2 transmits the acquired image to the data acquisition module 4-6 through the integrated wiring harness 4-4 in a video signal mode, signal processing and storage are completed in the data acquisition module 4-6, the data acquisition module 4-6 leads out a USB serial port line to be merged into the integrated wiring harness 4-4, and the USB serial port line is led out to the rightmost end of the data acquisition circuit 4 through the integrated wiring harness 4-4.
During the data read state: and the computer external equipment is connected with the USB serial port line of the 4-4 of the integrated wiring harness through the USB serial port, and the stored data information in the data acquisition module 4-6 is read, deleted and the like through the USB serial port.
In the process of a charging state: charging wires are separated from the storage battery 4-5, enter the integrated wiring harness 4-4, are led out to the rightmost end of the data acquisition circuit 4 through the integrated wiring harness 4-4, and are connected with the charging wires in the integrated wiring harness 4-4 through an external power adapter, so that the function of charging the storage battery 4-5 is realized.
In the circuit control process: the voltage transformation module 4-3 is divided into control lines to enter the integrated wiring harness 4-4, the control lines are led out to the rightmost end of the data acquisition circuit 4 through the integrated wiring harness 4-4, and the voltage transformation module 4-3 is started or closed through the led-out control lines, so that the whole system is started or closed.
Preferably, as shown in fig. 6, which is a cross-sectional view of an embodiment of a fixing frame of a data acquisition circuit provided by the present invention, fig. 7 is a cross-sectional view taken along direction D-D in fig. 6, and as can be seen from fig. 1 to 8, the fixing frame 3 is disposed inside the metal shell 2, and in a specific implementation, the fixing frame 3 is used for fixedly placing the data acquisition circuit 4, the camera 4-2, the transformer module 4-3, the integrated wire harness 4-4, the storage battery 4-5 and the data acquisition module 4-6, and may be cured in the fixing frame 3 by an insulating glue. The fixed frame 3 includes: the light shield 3-1 and the support frame 3-2 are both hollow structures, one ends of the light shield 3-1 and the support frame 3-2 are connected with each other, and the axial direction of the middle ends of the light shield and the support frame is the same as the axial direction of the metal shell 2; specifically, the light shield 3-1 and the support frame 3-2 can be connected by screw threads, and the right end of the support frame 3-2 is connected by screw threads with the left end of the partition plate 2-6 of the metal shell 2.
The camera 4-2, the transformation module 4-3, the storage battery 4-5 and the data acquisition module 4-6 are arranged in the hollow structure of the support frame 3-2; specifically, the position of the support frame 3-2 corresponds to the position of the circuit bin 2-2.
The position and the size of the light shield 3-1 correspond to those of the glass window connecting piece 2-1, wherein the hollow structure is a conical structure with an upper end opening connected with a cylinder, the conical structure with the upper end opening is arranged at one side close to the reflective concave conical mirror 1 and communicated to the inside of the hollow structure of the support frame 3-2 through the cylinder. So that the camera 4-2 can collect the hole wall image obtained by reflection of the reflective concave conical mirror 1 through the conical and cylindrical hollow structure.
With reference to fig. 6, the key design parameter is the opening angle E of the lens hood 3-1, and the value of the design value takes into account the field angle of the camera 4-2.
Furthermore, the cone angle of the cone with the opening at the upper end is the angle of field of the camera 4-2; the fixing frame 3 is made of aluminum alloy materials.
As shown in fig. 11, which is a cross-sectional view of an embodiment of a buffering protection component according to the present invention, it can be known from fig. 11 that the buffering protection component 5 is an elastic structure body with a convex end connected to the reflective concave conical mirror 1, and the concave size of the convex end matches with the concave size of the inner end of the reflective concave conical mirror 1.
The buffering protection part 5 is made of a loose and porous soft plastic material with certain elasticity, and in the embodiment shown in fig. 1 and 4, the right end of the buffering protection part 5 is bonded with the left end of the reflective concave conical mirror 1 through glue.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (9)
1. The utility model provides a reflective concave conical mirror panoramic camera device suitable for rock mass structure is surveyd to deep hole which characterized in that, panoramic camera device includes: the device comprises a reflective concave conical mirror (1), a metal shell (2) and a data acquisition circuit (4); the metal shell (2) is in a hollow cylindrical shape, the reflective concave conical mirror (1) is connected to one opening end of the metal shell (2), and the data acquisition circuit (4) is arranged inside the metal shell (2);
the glass window connecting piece (2-1) used for fixedly connecting a glass window is arranged on the metal shell (2), the glass window connecting piece (2-1) is the same as the direction of the central axis of the metal shell (2), the section of the glass window connecting piece (2-1) perpendicular to the direction of the central axis is circular, each light source through hole (2-1-1) distributed in the circumferential direction is arranged in the glass window connecting piece (2-1), and the light source through holes (2-1-1) are communicated with the hollow part of the metal shell (2) through inner cutting grooves (2-1-2) arranged on the inner wall of the glass window connecting piece (2-1);
the data acquisition circuit (4) comprises a light source (4-1) and a camera (4-2), and each light source (4-1) penetrates through the inner cutting groove (2-1-2) and then is embedded into each light source through hole (2-1-1); the camera (4-2) collects a hole wall image obtained by reflection of the reflective concave conical mirror (1);
the reflective concave conical mirror (1) is of a cylindrical structure with two concave ends, and one end of the inner side of the reflective concave conical mirror is in contact with each light source through hole (2-1-1);
the concave part at one end of the outer side of the reflective concave conical mirror (1) is of a structure with a circular arc surface (1-2) at the center and coating surfaces (1-1) at the periphery, so that light emitted by the light source (4-1) is reflected by the coating surfaces (1-1) to illuminate the wall of a drill hole, and after rock on the wall of the drill hole in the illumination hole section is subjected to diffuse reflection, part of light enters the mirror surface of the coating surfaces (1-1) and is reflected by the transmission surface (1-3) and vertically passes through the camera (4-2);
the concave part at one end of the inner side of the reflective concave conical mirror (1) is a transmission surface (1-3), and the camera (4-2) is positioned at the center of the sphere of the transmission surface (1-3).
2. The panoramic camera device according to claim 1, wherein the reflective concave conical mirror (1) is made of quartz glass with a light transmittance meeting certain requirements; the film-coated surface (1-1) is a silver film layer.
3. The panoramic camera apparatus according to claim 1, wherein the metal housing (2) further comprises: the device comprises a circuit bin (2-2), a tail end cover (2-3), a fixing ring (2-4), a rotary hanging ring (2-5) and a partition plate (2-6); the circuit bin (2-2) is of a hollow structure with two open ends, and the partition plate (2-6) is arranged inside the hollow structure of the circuit bin (2-2);
one end of the glass window connecting piece (2-1) is close to the reflective concave conical mirror (1), and the other end of the glass window connecting piece is connected with an opening at one end of the circuit bin (2-2); the tail end cover (2-3) covers the opening at the other end of the circuit bin (2-2); the fixing ring (2-4) is fixed on the end face of the outer side of the tail end cover (2-3), and the rotary hanging ring (2-5) can be rotatably fixed on the fixing ring (2-4).
4. The panoramic camera device of claim 3, wherein a first sealing groove (2-2-1) and a second sealing groove (2-2-2) are arranged at two ends of the circuit bin (2-2);
o-shaped sealing rings are arranged in the first sealing groove (2-2-1) and the second sealing groove (2-2-2), so that the glass window connecting piece (2-1) and the tail end cover (2-3) are respectively in sealing connection with the circuit bin (2-2).
5. Panoramic camera device according to claim 1, characterized in that the glass window connection (2-1) in the metal housing (2) is made of iron-nickel alloy and the other parts are made of stainless steel.
6. The panoramic camera device according to claim 1, characterized in that the data acquisition circuit (4) further comprises: the system comprises a voltage transformation module (4-3), an integrated wiring harness (4-4), a storage battery (4-5) and a data acquisition module (4-6); the light source (4-1), the camera (4-2), the voltage transformation module (4-3), the storage battery (4-5) and the data acquisition module (4-6) are connected with each other through the integrated wiring harness (4-4) to supply power and transmit signals;
the storage battery (4-5) comprises a charging wire connected with external equipment, the generated voltage is transformed by the transformation module (4-3) and then provides each power supply voltage to the light source (4-1), the camera (4-2) and the data acquisition module (4-6), the transformation module (4-3) is connected with a control wire connected with the external equipment and receives a control signal sent by the external equipment and used for controlling the starting or closing of the data acquisition circuit (4);
the camera (4-2) transmits the acquired hole wall image to the data acquisition module (4-6) in a video signal mode, and the data acquisition module (4-6) processes and stores the video signal and provides a serial port line to output the video signal to external equipment.
7. The panoramic imaging apparatus according to claim 6, further comprising a fixed frame (3), wherein the fixed frame (3) is disposed inside the metal housing (2); the fixed frame (3) comprises: the light shield comprises a light shield (3-1) and a support frame (3-2), wherein the light shield (3-1) and the support frame (3-2) are both of hollow structures, one ends of the light shield are connected with each other, and the axial directions of the light shield and the support frame are the same as the axial direction of the metal shell (2);
the camera (4-2), the voltage transformation module (4-3), the storage battery (4-5) and the data acquisition module (4-6) are arranged in the hollow structure of the support frame (3-2);
the position and the size of the light shield (3-1) correspond to those of the glass window connecting piece (2-1), wherein the hollow structure is a conical structure with an upper end opening connected with the cylindrical structure, the conical structure with the upper end opening is arranged on one side close to the reflective concave conical mirror (1) and communicated to the inside of the hollow structure of the support frame (3-2) through the cylindrical structure.
8. The panoramic camera device according to claim 7, wherein the conical shape of the upper opening has a cone angle of the camera (4-2); the fixing frame (3) is made of an aluminum alloy material.
9. The panoramic imaging apparatus according to claim 1, further comprising a buffer protection member (5); the buffer protection component (5) is an elastic structure body with one convex end connected with the reflective concave conical mirror (1), and the concave size of the convex end is matched with that of one end of the inner side of the reflective concave conical mirror (1).
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| CN202110554691.XA CN113324989B (en) | 2021-05-20 | 2021-05-20 | Reflective concave conical mirror panoramic camera device suitable for rock mass structure is surveyd to deep hole |
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| CN202110554691.XA CN113324989B (en) | 2021-05-20 | 2021-05-20 | Reflective concave conical mirror panoramic camera device suitable for rock mass structure is surveyd to deep hole |
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| CN113324989A (en) | 2021-08-31 |
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